It's all about the sit bones. What Brooks and other tensioned leather seats have going for them is that those points can be somewhat adaptable as the leather accommodates a rider. But that still might not work for everyone. Break in period is a factor too.

It is interesting to note that while on the topic of building seats to match the sit bones seems rather recent, I remember seeing seats from, I believe, the 1890's to 1910 that addressed this as well as seeing seats with cutouts in the center from that time.

I had the opposite experience. I bought a Brooks B17 woman's model with a wider base and shorter nose. It was intended for my wife's bike , but she liked the looks, but not the feel. I put it on one of my bikes to try it out. Perfect. It felt great. It was a more upright riding position bike. I moved it to the spare seats for now, but it will find a bike again.